Is Santorini still hot in September?

September-October The Aegean water is still warm in September and October, most days are sunny, and daytime temperatures typically hover in the 70s and 80s. Much of the tourist infrastructure is still open for business – despite the thinning crowds.



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With average lows of 66°F/19°C and average highs of 79°F/26°C, this month is still very much beach weather, and this is backed up by a healthy ten average hours daily of sunshine and the joint-second hottest seawater temperatures of the year after August (73°F/23°C).

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Santorini beaches and water activities are warm and inviting from May to mid-October and at their best from June to September. Santorini in January (10% Crowded): Damp, cold, and windy (by Santorini standards).

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Be warned that while early September will see all visitor facilities in full swing, but the latter part of the month may see hotels and restaurants reduce opening hours (or shut down completely).

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Which islands will be hottest?
  • Kos. Average temperature in September: 28ºC. ...
  • Crete. Average temperature in September: 27ºC. ...
  • Cyprus. Average temperature in September: 31ºC. ...
  • Corfu. Average temperature in September: 27ºC. ...
  • Samos. Average temperature in September: 29ºC. ...
  • Santorini. Average temperature in September: 25ºC. ...
  • Halkidiki.


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The best months for swimming and sunbathing on the Greek Islands is from late May to early October. July and August are the busiest and most expensive months but are also the best for nightlife and beach parties.

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More of the same glorious summer weather continues throughout September, although the odd day of rain is not unheard of. The balmy climate, somewhat decreased visitor numbers, and abundance of festivals make this month an excellent choice for a visit.

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The best time to visit Santorini is from September to October and April to May when the weather is warm and the crowds are scarce.

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The evenings can be cool with an ocean breeze, dipping down below 20C, so I highly recommend bringing some long pants and a sweater or jacket.

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Obviously, the weather will play a factor in what you're packing — but if you're going to Santorini from late spring to early fall, you should be fine with mainly “beachy” attire. Think sundresses, several bikinis, shorts, and cute tops, along with hats and sandals.

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The average high in Santorini in October is 23oC, so it is still warm and lovely, even though you may need to pack a warmer jumper for after sunset. At night, the temps can drop to 16oC-18oC. Generally, though, October may be a cooler month than September but it's by far warmer than most European summer months.

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The hottest month of the year in Santorini Island is July, with an average high of 85°F and low of 74°F.

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Santorini is the top tourist destination in Greece and is world-famous for its unique natural beauty. The caldera with the white villages on top, the sunken volcano, and the charming sunset make it a popular place for vacation. In brief, we recommend staying 3 to 5 days in order to visit as many places as possible.

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For those wanting to stay closer to home, Florida, South Carolina, Hawaii, and the Caribbean coast of Costa Rica are hot well into September.

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Low Season — November to April, the winter months, are the low season of the island. The cold and rainy weather deters tourists from seeking a beach getaway.

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Santorini is best known as a romantic island with one-of-a-kind views, whereas Mykonos is more about sandy beaches and spirited partying. Depending on the vibe you seek, both islands suit holidays à deux. Solo travellers and groups of friends will also find both appealing, though Mykonos offers more in terms of edge.

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The Cheapest Time of the Year to Visit Santorini The best time to visit Santorini for budget-conscious travellers is during the off-season between the end of October and March when hotels have vacant rooms and airlines offer lower fares.

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Cyprus is more than four hours flying time from the UK, but it can reach 32ºC, making it one of the hottest places in Europe in September. Malta (29ºC) and the Turquoise coast of Turkey (28ºC) also offer some of the best weather in Europe with guaranteed heat, long days of sunshine and warm seas.

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September is the best month as the seawater has been warming up for some months under a blistering sun. I've often swum in the sea in Greece in early Sept. Remember the later in Sept, the more chance of the weather turning, so the earlier the better. Water temp can also vary according to where you are in Greece.

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